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(No Model.) 2 Sheats-Sheet 2.

A. E. DEIBERT.

GAR,B BAKE..

No. 392.316. A Patented Nov. 6, 1888.

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. UNITED STATES PATENT OFFICE AMBROSE E. DEIBERT, OF KANSAS CITY, MISSOURI, ASSIGNOR OF ONE- HALF TO EDWARD J. LAWLESS, OF SAME PLACE.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 392,316, dated 1lovembm- 6, 1888.

Appiicntion fiicd April 7, 1888. Serial No. 269,920. (l\o modal.)

T0 aZZ wh0m it may concern- Be it known that I, AMBROSE E. DEIBERI, of Kansas City, Jackson connty, Missouri, haveinvmted certain new and useful Improvements in Oar-Brakes, of whioh the following is a full, clear, and exact description,reference beinghad to the accompanying drawings,forming a part hereof.

My invention relates to brakes that are applied by the momentum of the car or cars; and it may be said to Gonsist in the pecnliar construction, combination, and arrangement of devices hercinafl:er set forth, and pointed out in the claims.

In the drawings, which illnstrate the manner cf carrying out my invention, Figure 1 is a perspective view of the brake applied to a cantruck. Fig. 2 is a longitudinal section through power mechanism that is located on the axle. Fig. 3 is a detail view of a stationary cam used in making up the invention, and Fig. 4 is a similar view of a rocking cam.

The letter A indicates the car-axic, npon which is keyed or otherwise firmly secured,so as to rotatc therewith, a hollow dish-shaped friction-cylinder, B, said cylindcr having a long sleeve, B, npon which the main portions of the power mechanism are mounted. Said cylin'der is provided With an outwardly-flaring bore, 10, which is cngaged by a correspondingly-tapered or inclined frictionplug,0. Cast integral with or otherwise firmly secnred to one side of said plng is the winding-spool D, npon which the chain 1) is to be wound and unwound during operation of the brake, as shown.

The end of the spool D that isopposite plug 0 is provided with an annular groove, i,which is engaged by a corresponding flange, j,formed npon stationary cam E,so thatsaid cam and said spool Will be loosely connected during operation, and so that said spool will be permitted to revolve npon sleeve B.

Stationary cam E is provided With an annu- ]ar series of inclines, c, upon the side that is farthest from the spool D, and which are engaged by corresponding inciines, d, formed upon the inner side or surface of rocking cam F, the said stationary cam being provided with a perforated car or lug, a, by means of which it is fixed to the car-frame I, (a screwbuckle, b, being used for this purpose,) while the said rocking cam is aiso provided With a perforated car, a, to which the operating-rod b is connected. Said rocking cam is also provided with a fiange, 9, which loosely engages an annnlar groove, g, fou nd in exterior sieeve, G, and which latter is secured in position npon sleeve B by means of a threaded nut, H, and set-screw 13. The free end of sieeve B is provided with a screw-thread npon its exterior, which is engaged by corresp0nding threads on sieeve G and nut II, as shown.

The stati0nary cam E and rocking cam F are provided with circular centraily-located apertures 2 and 3, respectively, which are a little larger in diameter than sleeve B, so that said cams may be loosely mounted npon the sleeve. The windingchain 1; has one end secured to spool D by means of atransverse pin, k, or in any other preferred manner. In the construction shown, however, the pin 79 is sccuredin position by means of another pin or key, q, being passed throngh one of its ends and through the spooi-casting.

The plug 0 is cored ont, so that it Will be hoilow and shell-like for the purpose of providing it with internal chambers or recesses L, in which latter lubricating materials are to be located, and branch passagessuch as 6, 7, and 8-lead from said lnbricating-chambers to the several frictionai surfaces of the mechanism.

I prefer t0 fil] the chamber or chambers L with cotton waste L, so that thelubricant Will be steadily and permanently fed to the wearing surfaces.

\Vith this construction it will be seen that the frictionai parts of the apparatus are comparativeiy well protected from dust and dirt,

and therefore little wear will take place by reason of the action of grit and dirt.

The operation of the brakeis as follows: The operating-rod 1) is connected With a suitablc hand-lever, J, and npon said lever being adjusted to the position indicated in Fig. 1 the cam F will be rocked or revolved slightly, (in the direction indicated by the arrow s,) and the inclined surfaces d, with which it is provided, Wil1 f0rcibly engage the surfaces c npon cam E, and said cam E will be forcibly pushed to one side in a longitudinal direction npon axle A, as Will also spool D and plug C, and the inclined or tapered periphery 12 of said ping 'Wil be forced within and into intimate contact with the fiaring bore 10 of cylinder B, and said plng, carrying the windingspooi, Will be revoived with the axie A, winding the chain npon the spool and applying the brakes to the whocis of the car; it being evident, of course, that chain p can be connected to the brakc-beams in any dosired way. Throwing lover J in a direction opposite that jnst de scribed will cause a reverse action to take place, and the ping C and spooi I) will be drawn away from the friction-oylindor B, permitting said spool to rovolvo backward upon sioovc B, and the chain to unwind Irom thespoo]. The nnder portion ofcam B is provided with atrans versely-projocting flangc, lz,which is providod with inclincd Slots c. and which latter are ongaged by corresponding pins,f. which projoct froxn the pcriphery et eau] F. \Vhcn thc brakos are to be thrown off by reverse movement of the lever J, the pins wiil come in contact with the sides of slots c thnt are opposite or farthcst I"rom inclined surfaces c, and the said cam I!) and spool D and plng will thcrcby bc pnlled away from the friction-cylindcr, as before indicatcd.

\Vitln the upper portion of cams E and F 1ubricatingmecessas 15 are iormod, whch may contain wastc or othor lubricant-holding material, for the purpose of oiling the parts at their looality.

Hcretoforo mach trouble has boen expcrienced in brakos of this class in stopping npon stcep grades or inclines, particularly whore the brakcs have bcen located upon cablecars, the trouble having ocen that tire car wonid rnn back and looscn thc elntch or friction deviccs and thereby throw off the brakes, oniy a slight backward movement having been necessary to accoxnplish this. The reason of this has been want of power in the clntch and friction devices. \Vith 1ny construction and hy the use of my invention snoh trouble is completely obviated, and the car or cars may ho stopped npon comparatively steep inclinos and will be heid wherosocver nocessary withont backward movement. This is bronght about, as will be undcrstood, by means of the relative arrangement of the friction-cy1indor B and plng O, said plng being in the form of a powerfnl wedge, and whieh when once forced into contact with the bore of the said cylinder holds the parts firmly to each other and therc by holds the brakes in a set position.

With brakes of this class herctofore in use, such as shown in Patent No. 263,529, the frictional deviccs wcre insnfliciently powerfnl to hold a caror cars open a steep incline.

It is ovident that in earrying out the operatien of my device nnxncrons slight changes in the detailssneh as wonld suggcst themsolves to a skilled mechanic or a person of ordinary intelligenco-could be resorted t0 without departing from the scope and spirit of my invention.

Havingthns dosoribcd my invontion,what I claim is- 1. The combination, with a rotative snp-.

portingaxle of a frictional cy1inder havinga fiaring bore, a transvcrsely-sliding friction p1ug whioh engagos the bore of said cyiinder, and a non-rotative and a rocking cam for mak in; contact betwcen tho plng and cylinder, substantially as and for tl1c purpose spccified.

2. In a car-brake, afriction-cylindcr having a flaring bore, in combination with a transvcrseiy-sliding (rictionqflng, a winding-spool connected to said ping,and a non-rotativoand a rocking cam for making contact botwoon the said plug and said oylindcr, snbstantially as and for the pnrposc specified.

In a carbrake, a friction cyiinder, a friction-plng, a windingspool and a transversely4novable but nonrotative cam, and connections for making contact between said plng and said cylinder, snbstantinlly as and for the pnrpose specified.

41-. In a car brako, a friction cy1indcr, a transverselysliding frictionplug, a winding spoo], a transverscly-movable but nonrotative cam, and a rocking cam,all 1nonnted npon a com mon axie, substantially as described.

5. The herein-described oar-brakc arrangcd with a transverscly sliding but non-rotative cam, a rocking cam, and friction devices, substantinlly as described.

6. In the hereindescribed car-brake, a nonrotatable cam and a rocking ca1n, in combination with a winding-spool and friction deviocs, substantially as described.

In testimony whereof I aifix my signature in prosence of two witncssos.

AI\[BROSE E. DEIBERT.

Witncsscs:

A. A. HIGDON, J. C. HIGDON. 

